It'd be nice if there was a way to separate trading rep from general forum rep. I'm getting negative rep from people who don't agree with me on a forum post. Has nothing to do with my trading reliability.
Well being newish (May 2014) and not having any trades to refer too, it's going to be a little bit more difficult, but not impossible.
What you're going to have to do is initiate a trade and send your codes first.
Once you build up a few trades you should be good.